Suzaku attacks Zero, but is trapped by a field that disables Lancelot.
The Knights are using the school as a command center. When Villetta causes chaos, the student council move to free Suzaku from the field.
With everyone else out, V.V. comes for Nunnaly.
Cornelia draws Zero into a trap, but he's geassed her subordinate, and defeats her.
Then he questions her regarding his mother's death.
His mother withdrew her own protection that day. And Schneizel retrieved her body for mysterious reasons; it wasn't in the coffin.